Hi Angela,
I'll start by saying that alpha thalassemia minor is very difficult to diagnose in adults because there is usually no hemoglobin H found in the electrophoresis. A combination of various test results and ruling out iron deficiency can lead to a diagnosis of alpha minor, but the only certain method is a DNA sequencing (although presence of alpha thal in relatives would also lead to a definite diagnosis). There isn't enough information here to say a lot, but the RDW is quite high, which is unusual in alpha minor unless iron deficiency co-exists. Why was iron deficiency ruled out? Have you also had a group of tests called iron studies? These are necessary for ruling out iron deficiency but also because these can aid the diagnosis in general. Also, were there any comments in the reports about the physical appearance of the red blood cells?